diff --git a/src/script/squirrel_helper.hpp b/src/script/squirrel_helper.hpp
index ba4069d742..580f49cbd7 100644
--- a/src/script/squirrel_helper.hpp
+++ b/src/script/squirrel_helper.hpp
@@ -80,8 +80,8 @@ namespace SQConvert {
 	template <> inline int Return<int64>       (HSQUIRRELVM vm, int64 res)       { sq_pushinteger(vm, ClampToI32(res)); return 1; }
 	template <> inline int Return<Money>       (HSQUIRRELVM vm, Money res)       { sq_pushinteger(vm, ClampToI32(res)); return 1; }
 	template <> inline int Return<bool>        (HSQUIRRELVM vm, bool res)        { sq_pushbool   (vm, res); return 1; }
-	template <> inline int Return<char *>      (HSQUIRRELVM vm, char *res)       { if (res == NULL) sq_pushnull(vm); else {sq_pushstring (vm, OTTD2FS(res), strlen(res)); free(res);} return 1; }
-	template <> inline int Return<const char *>(HSQUIRRELVM vm, const char *res) { if (res == NULL) sq_pushnull(vm); else {sq_pushstring (vm, OTTD2FS(res), strlen(res));} return 1; }
+	template <> inline int Return<char *>      (HSQUIRRELVM vm, char *res)       { if (res == NULL) sq_pushnull(vm); else { sq_pushstring(vm, OTTD2FS(res), -1); free(res); } return 1; }
+	template <> inline int Return<const char *>(HSQUIRRELVM vm, const char *res) { if (res == NULL) sq_pushnull(vm); else { sq_pushstring(vm, OTTD2FS(res), -1); } return 1; }
 	template <> inline int Return<void *>      (HSQUIRRELVM vm, void *res)       { sq_pushuserpointer(vm, res); return 1; }
 
 	/**